† Monthly price of your Airtime Plan will increase by £1.80 each April from April 2025. Out of bundle charges increase by 5% from 1 April.

SIM cards

Pick the best deal for your device

Pay Monthly SIM

Pay Monthly SIMs

Get all the data you need without changing your phone. Choose from our 12 and 24 month Pay Monthly SIM deals.

Choose a SIM

150GB for £26.99†

12-month SIM Only. Get 150GB data for £26.99† a month.

60GB for £18.99†

24-month SIM Only. 60GB data. £18.99† a month. Ends 19 March.

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Browse our best SIM deals

Get more Flexibility with a Pay As You Go SIM. Customise your monthly data allowance with our Big Bundles and Rolling plans.

Rolling plans

The easiest way to pay without a contract

Tablet SIMs

Pick a SIM for your tablet or dongle

Grab an Ultimate Plan

Pack on the perks with our SIM Only Ultimate Plan

Business SIMs

Get a SIM only deal for your business phone

Why choose a SIM only deal?

Keep your number

Even if you're joining from another network

My O2

Manage your account 24/7

Perks and prizes

Download the Priority app for exclusive offers

Our network is a winner

We've been awarded Best Network Performance 2020 by Mobile News

†The monthly price of your Airtime Plan will increase by £1.80 each April from April 2025. Out of bundle charges increase by 5% from 1 April. See https://www.o2.co.uk/prices